Weigh tank



E. R. ALLING wmm; TANK Sept. 7, 1943.

7 Sheets- Sheet 1 Filed NOV. 16, 1939 I 3 I l Z5 h H M IIIIII E. R. ALLING Sept. 7, 1943.

WEIGH TANK Filed Nov. 16, 1939 7 Sheets-Sheet 2 INVENTOR E. R. ALLING Sept. 7, 1943.

WEIGH TANK Filed NOV. 16, 1939 7 Sheets-Sheet 4 5 Wm M M 0 f a r N 3 N r e M a 2 w M w MM. h 7 a m K m l. N i W. m A w w m N Au 5 m... H

MVM M a Q\\ \3 ill R m .r h \N m R \Q\ Ra mm\ .L D. .a Q @N Sept. ,1 E. R. ALLING wmen mm Filed Nov. 1e,' 1939 I 7 Sheets-Sheet 7 PatentedSepi.,7,1943 3 w a othe objeots' and ad an a Umm1 s rE I I ,E.l l oy'ialling,KenmoraN;

Application November 16, 1939, semi No. 304,872

out valves maybe quickly initiated'an dthe valves automaticiafter the operator initiates the'operation; withwhich danger of emptying additional liquid: into the tank before the run-out=,va1ve is closed will be preventedjwith which danger of the closing of the valve before all the contents have run out will all be preventedjwith which "the opening and olosing movements ofthe valve i will be relatively rapid; with which all the valves "and valve operating parts may be quickly disas sembled for cleansing; with which all parts-of thettank' may be easily accessible'jforcleaning;

merely performing a simple initiating operation without leaving dumpin position, or" shifting .1 any mechanism, by merely-operatinga simple button; and which will be relatively simple, com--.

pact, practical, dependable and inexpensive; I l I .i qAnothenobject of the inventionisto provide 1 improveimanuallyoperableymechanism detachr ablymountable on the tank for operatln-gkthe.

valvesfall of the parts of which maybe disas "sembled easily and quickly for cleansing,

i Another object ofthe invention is to provide in'proved manually operable mechanisn'i for opening and closing the flvalves wlhich 'be a interchangeably substituted for "thevpower operated mechanism for opening aridlclosingthe i valvea withwhich themanually operated mechism may be substituted as a unitgflar correspoi'iding power/mechanism, with which the manuallyoperatedmechanisnifisl attached to l the'tanli in the same manner as power operated mechanism and to thesam'e connections, and

a simple andirapid manner.

which maybe apnlied to the tank or'removed in- Will be apparent I from the' 'following 'descriptidn of twoembodifmentsof" the invention, and the novel features will be particularly pointed out in; with the appendedclaims.

. .aquickly closed; with which theemptying of the n {tank andaclosing of the run-out: .Va1ve,-Wi11be of the valve operating mechanism;

g i U 27 Clain s. (-01; 137 68) This invention relates to weigh tanks and particularlyto the means for dischargingtheljcone j tents thereof after. the same havebeenkweighed v sandsampled, H p 0 H7036 object of the invention is to improve,ex-

pedite and simplify the dischargejofcontents of Aweigh-tanks after. the contents'have been weigh edandsampleda 1* f n Another object of the invention is to provide x improved means for, discharging the contents of aweigh tank: afterja Weighing and samplingoperation, with which maximum speedof emptying l of the-tank may be accomplished in a simple mannen; with whichkleakage willbereduced to. fa minimum; with which the opening ofthe run connection Intheaccompanying drawings: Fig. 1 is a perspective of a weigh tankcon- ,structed in accordance with this invention and disposed. in weighing position andfor discharge of its contents into a mixing tankg v 1 Fig. 2 is one side elevation of the same; with a portion broken thereof; 1 l r i Fig. 3 vis'a-plan of the same, and illustratingby dash lines the manner in which thepoweroper ating means for the runout valves may be swung away from the tank to expose the entire tank surface for cleansing; r a i #Fig. 4 is aplan of part of the valve operating mechanism of Fig.3, but. in aposition occupied when the valve is scale; g i i Fig. 5 is an elevation,partly insection, of'part Fig. 6 is a bottom viewof the parts shown in Fig.5; I

" r Fig. 7 is a sectional elevation throughthe tank to illustrate the valve construction and arrangement, and the operating mechanismtherefor,

the run-out valves being in closed position;

Fig.8 is a similar sectional elevationgbu-t with thevalves in open position; l l l i a Fig. 9 is a sectional elevation through-the support for the valve operating" mechanismand i1:

lustrating the usefnlnessof certain details;

Fig. 10isan elevation of a; group ofthe valves and valve operating parts disconnecte'cl'fromone another but in position for reassembly; :1 {Fig. 11 is a sectional elevation through the tllbe and part of the mechanismlfor controlling the automatic closing of the valve; it Fig. 12 is a sectiorialplan of the same, "the section being taken approximately-along the line Fig. 13 is a longitudinal sectional elevation" of thelower end of the tube similarto=Fig11but .45 i Fig. 14is'asectional plan through the oapof the tube, toshow the mannero'f establishing electrical connections to the tube and the elecl trode', 'the seotion' being taken approximately alongthelin-M-liof Fig, 1 1;1

Fig l5 is a schematic and wiringdiagrarn i1- lustrating the electricalfsystem and connections applied thereto a manuallyoperated; valve opening mechanism which mayb t d tonvth Fig.1? is a plan of ajportionofthe 'tank to applied as in ri 1e;

which the valve operated mechanism has been N OF i away to show interior parts fully: open and on a larger tibnoflink':2lffromilevers image levefi stud Hid e'ictending from Fig." 18 is aperspective illustrating the manner of mounting one end of the operating shaft of the same;

' Fig. 19 is an elevation, partly in section, of the manner of mo unting another portion of the shafts f or rotation;

- vFig. 20 is a transverse sectional elevationthrough a portion of the tank, and illustrating the the. v l g, Fig. 21 isv a transverse, sectional eley t manually operable mechanism on the side tank for Operating the valves;

through the hand operated shaft to show. the! bearing construction for one end of the shaft;

the section being taken approximately along the line 2l2| of Fig. 16;

Fig. .22 is a sectional elevation through the hand shaft, the section beingtaken approximately along the line 22-22 ofFig. 16 to. show the-construction-of'the cam;

; Fig-23 is a view similar, to Fig..22 b ut with the cam'in a-difierent operated position in which it opens the valve; i L Y i ,Fig. 24 is a perspective of theoperating, shaft with-cam attached; and Fig. 25 is an elevation oftheframe for mount.-

ing. the manually. operatedmechanism,v which is interchan e with the; frame f the. power mechanism foropeninga d closing the valve.

In the'embodiment of the invention illustrated. in Figs. 1 to the. improved weigh tank I .(Eig.

l) is mounted in a'suitable manner suchas by legs 2 upon'a iii s gh ing platform 3. The tank! is provided with. cover 4.. having adjacen t one' end thereof a hood 5 which may contain straining 'means andthrough which liquids such as m ay e mptied; into. hewe s k from. a plurality of containers for weighing and sam-' pling. The bottom wall of the tank I slopestoward a plurality of run-outvalves (Figsf'lgand 8)- arranged side by side.- These run out valves are provided by run-out passages or openings '1,

each havingabevelled valve seat8. I

in each opening 1 is disposed a-run-o-ut valve element 9 which has depending legs or. armsl 'l that passfthroughoralongthe tube. or passage lg and guide'the valve element for free vertical 7 movement, "and that, have sufiicient clearance with the'walls of, the passage, 1 to enable, the

valve element -a tomeatitself firmlyon the bevelled seat 8 it .be'ingunderstood that each. valve element 9, jhas a bevelled valve periphery 'll which, when that va v e e e s c o ed, rests upon a bevelled seat 8 These valveelernents ii maybe upw ly. onv ass oiv in i s- 71am ,.fand each has upstanding boss-L2 terrni nating in a hooked end l3, Whichhobkedfilldlms alpt 1, ope n m tli ,fre r. d.. ha iao wellasrmove. laterally of, the tube. 24. The tube ZLihas diametrically disposed pins z ia which are a related eye tab on link 2!. Each eye l8?) has a groove or slot 180 in its'bearing wall lengthwise from face to face,v and each stud I8a has a radial tongue ltd on its end beyond the eye, so that a by turning each lever L8 in the eye .151 until the tongue flfid'isin alignmentwith slot I82, the eye and stud can be separated or assembled. The L t 180 or tongue lSd are 50 disposed angularly with respect to one another that they are out of alignment when in normal connected positions during use. I The other end of each bell crank lever is forked and provided with notches 22 that extend downwardly into each arm of the fork in the upper edge thereof. A link or rod 23 (Figs. 7 and 8) extends upwardly from the tank through av tubular;sleeveforv boss (Figs; 8 and 9) with substantial clearance andterminat'es at its lower 3 endkinxa spherical head-or ball 25 which engages beneath the hooked end i3 on the valve. element 9. immediately below theshank of the rod 23' passing through the. slot M (Fig. i 10)..

1.1 116 upper. end' of .each. link. 23 is. provided with a .T-shaped head or cap 26, which rid-es upon, the. top of and closes a tube 21. that fits loose- 1y over. the tube 2-4; so. as to.- rise and fall. over, as

received in? notches Me of bell crank It. The

- opehingor passageof -each sleeve 24: in thesupi- A-support I5 (Figs: 7. and 8) extendsacross the open ppperend o f the tankand carries onits eifer ec a L s r .q urs es ne i elsi ii e ts Each'of these supports has a pair of;,-arms i s 2 M t e n na ps prank i r' is eblrd sao ea. T e eetmse i offeach support both have aligned slots l9 openin upwardly-therein and each bellcrank is has pins "20' whichfare vedin said slots assess toform; afpivo tal or rocking support for; the bell :The depending armsof the bell w iv e qm ec s r il it a base 'unde'rstlood'that thetwo. bell cranks are disposed K in tandem arrangement the "same as the" run-out valves. 9.. 'To. enable -,dis connecu l v porit' lfij through which theshank of a rod 2% en.- .tends; is large, enough to pass the. head 25; to

enable removal, of eachrod 23. from the support when disconnected. fromthe. valve. element 9; and toaljlowsome lateral movement ofeuch rod 23. The cap, 26; and: tubes. 2. 33 and 21; provide for vertical movement ofrod. 2.3; with. sufficient; lateral clearance; but prevent-theentrance ofxforeign V matter into the. tank through tube 2:43.

The link: 2;i,(Eigs. 5:..an'd 6) whichconnects the ependin arms otthe. bell cranks extends be-' yond one; of: the. bell. cranks. and terminates. in a .v -ided. on neend. of. a link. extending to .one side. of. the, tank (Fig.- S. Q ZQVM QQ Witha slot .3i.fromj the free end 'of thehook; in. ailproximately. central line. position Q thalitl r 9.; s; Shown. in. Eigs, figan'dzfi so that the shank, of.=th .,rod,;2;i,. may. pass through the lot; in Qc up-ling and i uncoupling. the rod: 2.1: and i the hill-$ Tlie, Qther. end of. the. linla 30;; is forkedto, provides arms (Figs. Svanda) and each; forked. arrn 321; has. a notchv 3-3zextendmg therein sfrom anedgepfithe. arm- Theothehedge ofeaeharm.sgyisicnrved'.asatfit. Arotary head QlLCraI ik- -member;35 ;(Figs, 3and 4) is fixed'on a vertical. str it; 52ml. rotaticn therewithnan d:.this

lfimpelfi- 35v arries;=-;an upstanding pin. 37 "A 1. Q 3. 5: feis- 7234 .61 8:), is .rotatablyfineda n the pin 31 insanysuitabler mannersuch .a-snby.. a

remova le, 9 i:z, cw i h-is pinne cntthaupp f ni blesetse w pc911:

. s a ifi ba es; ml diez ita lr; asse e ides. bee-meshed: i

The. hooked. end. 28

ordvid :suincient 'clearance' 1 for 5 theiL 'swinging dnetion gearbox-42 toi thefdriving' shaft '43 of an 'electrio motor 44. Themotor 44 is ofthe 'Thefshaft as is eonneoted magma speed i ordinarmrotary type of eleetric: motor, prefer= a ably one which will'stand a;substantial aoverload" for ng periods of 'time1without overheating;

even though the motor niayqbe-ystallediwSuch in otors are availablein the open marktand'the details thereof do not, per sew-form a part of tank at either 'endof the frame tilseleetivelyso this invention. When current""is-supplied to the motor44-itrotatesits shaft 43 and the latter through the 1 gear 100x42 slowly :re'volves the.

Crank member 35, and through its connection to Ffthe link 3il operates, the 11m; sq .ehdwise .to 0;- t

a It ate or rock the bellfcran'ks I 8 from the positions shownin Fig. 7 to the positions shown -inFigwt During thist mov'ement the valve-"elements 9 will be lifted and any liquid in the tank WiHFbe allowed to run out from thewalve openings 'l;

The motorQ M will continue' to rotateyiintil an I a armAS oiith'e crank member ss e ngagesa'gainst Thereupon further movement of 'themotorflarid he 'crahkymember vfwill-be prevented, al-f;

hongh current is still being delivered to" the I flimown as a stalled condition in whichit is exerting a rotary "torque tending to maintainthe 9 imopen positionas shown in1 valve elements i which reciprocates over a tiibular stem; and

otor. The motor is "thenfin the condition be covered "by may be removed by pulling it iipwardly; or 11'6- inserted-to couplethe frame 52 to thetankJ ln'I'he pin 54 similarly connects the frame 52? at its 1 otherend torthe side of the tank I, and pin 54 jalsoihas atlitsupper end alateralexten'sion .-;;by which the pin '54" may (be removediorllree' inserted by "moving Y it vertically to couple .011 uncoupled the" tank I and the frame- 52511 Thus by pulling the pin 54 outwardly, one .end of the frame 52may be released somas to 'swingabout the pin 53 as apivot. ,Similarly by removing.

In that 1 Way thegframe 52 with the motornfl and gear' box-42 may be swung. away from t the as to make possible complete exposure of the entire face of the tank which wouldvoth'erwise box 42. i

- Thelgoutlet passages] whioharebontrolled'by V the va1ves-9 have depending l tubiilarlwallsth (Figs? and 8) whichdependflooselyintoopen ings Blprovided in the, cover 6390f the mixing tank 64,1and a frusto coni'oal fiange or l skirt '(Fig. lalso) may be provided on the tank of the mixing tank 64 and prevent the entrance of :foreign matter intoithe mixing tank, yet allow of lirnited free vertical movement ofthe weigh: tank with the depending sleeves or "walls Gl'Iwhiehnecessarily must" have f'ree clearance in thef'openings 62 :in order to permit-weighing of the weigh tank with and without contentsfr j The eover 4 may have separable :sections 66 and 61 (Fig; 2) on obpositeside's of the support l5 and upon onevof these cover sections, such as 61, I mou'nt a cont'roltube fifl' 'in amannento .depend into the interior of the tank I" into close proxiinity'to the bottom of the tank, and prefera helical compression spring 49*is" disnose'djin a finer closed end of the cap :41 'andi slnrge it ontvardly'orithestem 48; I has relative' reciprocation infla slot-ilgm, the

" eap 47, so as to limitthefoutward movement of l the eap 41 under the action of spring 49 when the roapis released by the arm 45. When the our-1 '49 immediately urges" the cap 41 ontwardlyajrid hrongh it starts the crank member 35in'a re:-

hecurrent of the motoi'is 'discontinuegq iiokly, romptlyfand definitely starts the'ureversal of he rnotor and return of the motor and valves ts.9 are closed onftheir seat s as shown inFig'.

mi. to ef d b i e, t nk t: ifl' f e ii; 7p sses through suitable bearings 55 and 58on t ent .to the motor 44 is discontinued, thefspring i o an initial position in whioh the valve elei heffrarne; 52 (Fi -Q 7-2., a thr g ih eat l ibos'ses35'l'and158provided on the side of thetank.

he stem {l8 in a position to engage'again'stfithe 50 tonn stem n a metalrod l lwhi'ch-depends' through thecap 12' and down t'ubeGB to ae point adjaoentj the r'se direction, which immediatelyjbe the k k bottom thereof, this portion of-rod 14 within th'e" losing-inf thevalves. This spring-stop", when explained presently; The tube' 68isprovided near ably in relatively elose proximity to one of the valves 9. This control'tube 68 ispreferably'a metal tube which is connected by bayonet slots 69 .(FigLID at itsupper end to pins '10 earried by a metal strip?! on the inside of a molded cab member or support which restsuponthe iipper faceof the cover seetion iilm Theintermedi'ate part of the metal strip l-l is ofiset laterally from i the Center and is provided with an upstanding rod 13 (Fig. 14) whioh extends through the cap I cireuitnwireapas will be explained presently.

tube functioning as'an electrode in amlann'er to be explained presently. The outer end "of the rod 14 isfconn-ected in a circuit in a manner to be and gear? 106s; are mounted ,the escape andentrance ofair and the rise or fall qof liquidinthetube as a The tube as is also provided adjacent, b it'fislightly abovejits bot tom with oneorn'iore qther openings :16 of relatively large size so that as the liquid level in the tank rises; this liquid may enter the tube 6 8 freely through theopening; 16 and rise in thetubejso as Qt maintain a liquid-level within the tube equal to at Outside the' tube} The tube 68 is clbsedat bottom by a removable, frictionall'y'held cap 11 (Fi 13 which, byreason e: slots 18, entities it to bfric'tionally telescoped withthelowernd The winding of relay 93- isconnectedat side by wireQE to therod '13 whichisconn'ected or thetube. ca. 'The. bottom or the. cap; H is at sired time. interval; in a. manner to.v be explained presently u .....R.eferring now particularly to the schematic diagram shown in Fig. 1:5,:the tube 168. and. elec-= trade 154 are shown. schematically. 'Gurent'ior the motorand other operating.- mechanistic is-surrplied by three line wires L L 1 and Lt. ascusuahin commercial three wire installations 50126.. and or a solenoid 80 is connected by a'wire iili to one side of anormally open switch 82, the. other side of the switch being. connected-bya wire at to line wire L Theother. side of the solenoid :dlt iscon: nectedby a wire 84 to theline. wire. 19-; Thus when:the switch. s2. is closecL-it completesv a cir-. suit from line wire L through wirej83, switch 82?, wire 8|; solenoidtl). and wire '84 to line wire 1 1L energizesthe solenoid 80-. and causes. it

1 to-attract its armatureBB. against the action of spring '86 vand until its contact bridge 81 carried by'the core. of the solenoid engages and connects contacts 88 andi89. -The wire 83 is connected by an auxiliary wires?! to the contact 88; and thus i when the bridge. 8'lrengagescontacts 88, and d9; it

completes. a .holdinggcirouit' from wire L}, wire 83,.wire 99,; contact 83-,"bridge 81, contact-469,

wireg9l, contact 92 of relay 93', armature 9.4:oi relay 93, and wireflfi towire 8i, thence through solenoid ail and wire fi l'to'lin'e wire L3.

one

} 'vided witha' restrictedopening 'l fl' thesize' of this opening tube calibrated in accordance wit-ha de- These. signal devices are conveniently li hts. such. as. red lights; and when the solenoidso is energized, theclights or; si nal.devi1ceswill. be rendered effiectiveaby a. circuit; from line wire, L

wirel lights lit, wire llfilwire i 1 contact tot, brid e Mil, contact, i015, and wire,- BA to lint wiresL. Nilhenthe solenoid isr deenergized, thfi? circuit through the lights 4 will be broken.- h s he: li htsywhen illuminated will indic I hez ore to'the controltube BBQ'and theothe'r side of the relay-winding' 93 isfconnected by a wire 9"i'to one side; oi.-the;low voltage winding-oi a step-down transformer 98, the otherside of that winding being-connected by wire 99 to the electrode 14'. The

primary winding of the transformer 98; i C011!- nected at one side to .the line wire L and at its other side to the line wire L and; because of the voltage,step downactionof the. trans former 98, it imposes a continuous low voltage upon a circuit including the secondary winding thereof and'therelay 93. Whena liquid is in v.

the tube 68. v in contact with boththe metalof the tube 68.:and the electrode M,- it completesthe low voltage circuit and a. low voltage current passes-through the. secondary winding of the transformer of the; winding of the relay' fid to attractthe armature 94 andclose the. holding Oincuit between. wire 95 and contact 92;. The. core '85 of thesolenoid '8flalso, carries a series of other bridges I00, I and I02; p p The bridge I96, when thesolenoid td is energized, engages andgconnectsa contact I03 which isalso connected with the contact adaniaieonitact I04 which is connected byg'wire ltd-tome valve-operating motor 44. The bridge ;-l9i,;when

the solenoid 80 is energized,connectsy oontacts I06 and 101'. The contact Midis connected to tam milk from other producers or sources. emptythe weigh tank the attendant merely that the solenoid 8m is ene eized and that the. motor is 'eitnercpenins or is in; compositi n which a-signal totheattendantnot to dumh. milk or.,.other liquid into. .the weightank d ring theitimew-hen; the. li hts are bu n beca he run-out valves .aresthen e ther being opened or-are Q9011. sp ing 8fi returnstheibridge's 81, ma Lei, Hi2: to

op n circuit positions. s own n ie- 5,

movement. beingv limit d. in, a y; su table manner 'suchasby the {engagement 0f.-.an;a-I': H6 n of: thesclenoid with, one or morestops flAssuming that the tube 68 is in the position shown in Fig. 2 inwhich it depends into. the tanl; toward the bottom thereof, and assuming that the Nah/cs9. are filosed; the procedure will be as follows: The attendant, as he receives milk from any sgiyensolnice will empty the cans successively through the strainingrhood 5 on the tank 4, then pass, the'cansto the us al washer. The milk or other liquid .iromi'any given customer or source is all dumped into the. weigh tank I where it -is mixed to some extent, and after ,weighingthe sam t e attendant; takes a Samp e r the. tankga'fter-which the milk is. ready to be dis-.

charged intovthe mixing tank'El which may con closes momentarily;the normally open switch 82; which, causes anenergization of the solenoid 80,,

. and the latter then, by operation ofthe bridges 4%, HH and W2 completes a circuit to the valve opening-motor M to open the. valves and hold them'open and as soon asthe'solenoid reaches a its iully retracted .positionit completes the hold- 1 ing; circuit:;through th relay armature '94,

lt'willbe understood that-'when-the milk was I placed in the weigh tank, it entered the control tube fi8 tl'irough thecpenings 16 and 19- until a the liquidglevelwithin;the tube. sci was thesarne.

as outside of the. tube in the tank. When the liquid level; arose in tube 5.8; it completed a cirthe wire;84,"and the contact I01- is oonneuted by a wire Hi8also to the ,valve-operatin-g notor M.

The bridge l 92 is; adapted, whe the; solenoid; 8i)

- is energized, to engage. with and electricaily-eonnect acontact I89 which is-oonnected to theline wire L and a contact-HE! whicht is connected'foy,

a wire II I to the valve operatingmotorAdi-The frame on e Valve ope ati m t r M11 roles grounded bya wire l=l2 so as toavoid any-pussy bilityoi shock to the operator who; might come contact with 'the=motor. One of the wire to' the motor, such as theywirei I158 i a1soconnected by 'a wire H3 to one'or more suitablesignal-devicesv ;ll ,'and thence by wire l It to line-,wireLt.

cult between the 1ne talof the tube 6.8 and the electrode 'ld which. energized the relay 93 and caused a closing of thearmature 94 thereof to 'completerthe holding or stick' circuit of thesole} no id .80-.- This holding circuit was inefiective to 4 cause energiz'ation of the solenoid 8B because this holding circuit was, :atthat time open at'the'cohtacts de and B9. The relay fili however; remains energized. Then after the weighin'g' f and sampling of the contents of. th tank, 1 when the. attendant. operates. the button 82, the solenoid position shown in Fig. 7' to theio e ncsition -sh9- ,Fi .8 Y

FL QS b iQ Q t onenvaivepc itish in ing;

When t e s lenoid s.Li e Bl iZB. e 9

Top"

v 191111 the bottom thereoI L t;

I iaaaase't v X8 is reached; the time on thecrank member jcasetherewould beleakagejthat would cause a 35 engages and compresses "the: spring-,stopf llt a v which stalls the, motor 44 as the'fully Op D tion is reached, but since the-motor is preferably ",onefwhi'ch will stand an-loverload in stalling for a substantial or lengthysperiod of time .without injury, the motor-merelywexertsa continuous controltube GBWillI also descend in level to role torquewhich holds the valve open so long as the v v solenoid flllremains energized. Whenitheyalves i Qare'opanedgthe liquid inthe tank Igor course v v v v r v begins to run out rapidly, and :theliquid; in the lowgthe level of-the liquid outside oflthe tube f.

"ibut in the tank L Thus the liquidi level in? i tube 68 will followthat in the tank lg until the opening 16 is reached and then as the level in the tank I sinks below that-of the-opening "l of tube 68; the liquid can only escape from the control ,jtube'68 through the restrictedopening g'I'his-opening 19 is of-such of the lower end of electrode J4 is li voximately the i ev r q Q t-the:. i u d leve tii t k 1| (1)0 descend fron uthe opening 116 of: tube-58 'to loss to the farmers supplying 'milkjto the plant. I'havefound that I can obtain the same run-out capacity by usin twqvalves of approximately 12 inches diametenconnected for simultaneous operation, and that the 12inch valves are not likely to wa rp or to become deformed in a manner to seatimproperly and leak. -With the single dump tank with sufiiciently rapid run-out capacity, I

am able to connect such a yveighgtank in a straight line 9? vio w d upp ing s tiqnyv r s e the e n e o of l can ti a ec v na y t m- I tjis; easier :1 to empty: the *cans received in this straight linefposition than where multiple compartment weigh tanks are employed; because the canis merely dumpedforwardly in a normalposie tion,-the san 1e foreach can 'and the axisof the can remains weighttank.

sizezthat thetimef required for the liquid to escape therefrom and t bring the liquid level in tube-t 68 below" theylevel the valve outlet or seatB I Since thefl iquid head 80 and causing a deenergization of the latter. The

solenoid 80, being deenergized; interrupts thes'um ply of currentto the motor it 44,. whereupon the spring stop 45 which has been compressed by the a torque of the motor, starts thecranlgmeniberfi and through it the motor 44 mthe reversedirection, and the weightof -the' valve 9'1and rods and nks continues the rnovement; and causesa rapid g '"closing of thevalves Q. a i v 31mm j it soon as the; solenoid Bilis deener'gized the i gnallights H4 ceasefl-tov -burnvand indicateto orpressurecausing theliquid to run out through; ,filth opening varies t ug a, deiinit r n e from the opening 16 thetime in'terval for this liquid trapped in the bottom of tube 68 to drop centralwiththe long axis of the 1 While withithis; arrangementiemploy two out valves, :there will still be fewer partsto be cleaned than in the old two compartment type Qf vveigh tank, because in" theold'type it was necessary to have two sets oil strainers andcovers. The attendantdoes not haveto leave the dumping position toshift from onecompartmentto another or to openthe run-out'valve, and as soon as; he completes the dumpingeof the contents of cans from. any particular source into the weigh tankfandlweighsand samples thesarne, he merely pushes the" button l 82 nd; the opening and reclosing? of the valves is then accornplish'ed auto maticallyif..Theattendant then merely prepares rthe attendant that the valves are-closing, whereuponit isagain safeto start dumping the supply,

of inilk ffrom another customer or source jinjto v the weigh, tank for weighing and sampling. By this arrangement the attendant knows by; the

lighted or unlighte dcondition of the signal lamps i lllwhetheror not the run-put valves are closed,

" and th'erefore he will not be likely to start dump- 1 :the valves are closed or whilefthey gare open; rhfterthe valves 9 seat, the motor andllinkage will continue to move until an abutmentl l 8 (High engages against another stop ll svwhic h will gprovide suflicient slack in the valve operating nka'ge to allow the valves 9 to seat fully;

two compartment weigh tank, becau s e itwas imity for one compartment. or To obtairf the desired Heretoforeit hasflbeen customary;to employ a T runouticapacity to: a, single compartmeht wei gh t a nkfof theJaveraIge milkz'receiving plant;.it would v I be necessary to'use afs inglevalveifl of about-18tor L l l9tinches diametenbut a valve so large is vvery likely a t ne Priest y i nllh qhi the cans f ifom the next source tor. dumping and as soonfas the signallights gojout, hecan then begin dumping the cans from the next. source.

This automatic closing of the valves and indication ,or when they are closed, insures that the attendantwillnot close the valves toosoon and before fthe'ffeniptying is completefbecause this would result in overpaying the producertsupplyting the next quantity of milktothe weigh tank.

It also insures that thet'milk from a new source willj not be. .dumped into the Weigh: tank before thevalves are closed, because in thatcase, some ofthe, milk'would run onQthrQugh andnot be; e

weighed,'.with resulting loss to the producer. While I have illustrated the electrical rotary type oi,overload motor as the preferred form of power operating means for v the valves, it will be understood"thatiother power operating means inlay bejemployed within the. broadertconcept of the-invention. The electric rotary type ofrnotor which will stand stalling and overload is pref erable inmany respects because, for example, it has a high starting torque to lift the valves at a time when the valves areheld'closedby consider;

ableg weight -or head of milk] or other liquid thereonifg I fasole'noid motoris used insteadof throtairyhrotor, it has its minimum pull at the H star Y ecauseofytlie large air-gapfa't thattime,

: when the makimum lqjopeningforce is necessary to overcome the weight of the liquid holdingthe V valves closed; Solenoids would also; be QbjCC-z tionableas noisy, because as soon as the valves i are partially opened,thesudden decrease in oper ating-loadwould cause a'rapid operation of the e solenoid with considerable impact and noise,

With the electric motoroffthe type illustrated and described; I obtain, smootherfoperationand high startingtorque. st nd other, power. oper i atingfmeans could also be employed, but theelectric motor venables a very; simple and automatic controller the valves; and automatic closing and case s-where an entirely manuatepraitioh oi the valve mec'hanis is desired, or where a 'cbnstruotien is desired that enalile's manual operh katmfi {in case thrpawr ils-a manually operable ev iceisiprovided'whie m i flh 'interdhangeablyWm? e power-operated m -ehanism. Su a? .t V

' nt 'is incorpoewe e rated in 'eerringfnowte Figs, I I I operating mechanism which *is 1 on the same lugs 51 and 53 proviizlefd onf' the l as is' jthe power operated 'inechanis skel'tsnframe -IZGYIFi'g; "25) "is plqvlded n is'm to the tank I. Thepinsfi? andFMyeiss through correspendingfa iignedfbealinglngs; of

the tank and of the fraine' F20, and thus serve detadhadly connect frafn'ie ii-2 "to "the t alrik. fiy removing either pin 53hr e itheiramewith "the *mechar'iisrn carriedf thereon can. be swun I upon-the other of those pinsawayjfrom the side vof thetanlg l so as to expose theentiretankside I for cleansing. i

, A;1ever 125 :is -ivotedfby a studl ismgsf e,

provided with h -11y aligned pins 11%- extend ing position beinesnown in dashlines in Fi .20';

" I Thecouplinghjead 32 of link 3fl is prievented from dropping awaydiiom jthe'pinsk-lfffi by means of eupqportingpins "l'iza onlthe lever 12'5.

I mWhen'th'elink'lB'D is disengaged fromthevalve ;the vaiv I I I angealile the power opefated meehanismis mounted loks th'e shazft liiliaga'inst late dallmovemerit out tease-me I 'floai i-ng 4 33. I I I I 'whicl'l *faces or abuts thehearing 1 33 :is provided a concave :recess 1 39, which fits and telescopes over the convex or' oonvergent end wall.

m: This s'l-ig ht telescoping 0f the ollar 1133 with the"=beari-rig 13 3 provides a rotatable bearing 5 hetween the collar 'l' 38and the :bari-iig' I-33 sc fthe tore 1:35;

the beeii ing lfi, wl'ii'ehis showri' oia a larger v soale jin fEigs. 1 8 ano zigtne sidewalls of th:

"slot-leading to the lo'ore -l34 a're' provided with I =g-rooves It'll rnn- -endwise' "and parallel to "the here. A somewhat u-shaiped spring clip lfl' l has oppositely-extendingflanges M2 at the ends y -eonnect'theframe of the po-weroperated meehaslidalblyfnecelved inthe grooves MB of the hearing 0&2. .B y pinc'h ing the 4:11pm slightly; the

' 'flengesma -are hrought together suffioien tly' to 4B6 lateral1yo1f'itself 'outof tlie' bore -lel'of that, Qbearing. Fixed *ohtheshaft I136 atza point be a as shown mines. 1-6; and'22, the -ro1ler 130 will j enable them to be inserted into thefgroovesI' l lD I endwise, and slid along the grooves irito the position shown in Figs. l7 -andf 21. "Then when' the spring clip is released, 'thefa rms thereof will spring apaii t and fridtiona'lly look the o'lip inthe grooves MD and preventmovementgof the shaft tween the bearings IM :anl' 133 is ao'am M 3 (Figs and thefend of surface M 4 adjacent-the flange fldis considerably nea-rer sha'ff-tfilfifi t an the end'of t-he'cam surface M 4 'wh ich'terminat'es in the notch, groove or recessfMB.

Whenthe m M'tis in its upright pesi tio n lie adjacent the flange *lfifandthe lever 1'25 will be nearest to the tank I at its free 'end that is, the endfcon neeted to the link 3%), so that the valves will be el'q'sed, "as shown in full lines in'Fig. 29, 13 i the shaft IStis rotatedcountereclockwise in Figs;

' roller T50 away from the sideof the tank and operatingi:mechanism"'above the"tank, alf ldil'iS swlznjg pwardly above the pins 1'28 intoan 'hprightpos'ition; the curved edges 3'4jtof th'e forked en'diof thefh'eadBZ will clear the'pins 1329 and i thengthelinkfil mayfbeerrtirly d'ise'ngagedsfrorn thegpins 1'28 When the parts :are assembled as shown in F g. 20 thefpinsfl zfi prevent' the "link head 32 from dropping, 'yet allowing rocking i I movement of 'the'link' tQ aboutjthejpins 128. The lever I carries, intermedi'ategof its ends, a

ronerj 1311 which issrotaztably'mountedf'or a Stud 13! e'xte'n'd'ingfrompne side face of the lever 1'25.

al'qng oneside thereof. Ashafit ,1 3'6 ismountedvin the'hearingpassages I3 9 and 135, being inserted inand removed :from' the sanie by lateral movei ent through the slots in the sides of ith'e bearings; Tnejs'haftjfiit isflireeto move endwisefas :well 'as Rotate, in th bearings 13.2 an I33; on

, Ontheframe 12% I provide a p'air o'f spaced bearings iltz 'and 133 which have theirl passages it't and T35 QYSPEQfiV1Y=fifi8ZY1Y aligned with one another and both of .whieh are open lengthwise.

this will eam thelever from thefiilllfline to'the dash line position'shown in Fig. 20, a'twhioh time the roller willengage in the notchi lfi er the cam surf-ace so as -to yieldingly hold the leverv 1'25"ihthat position. v This movement "of the lever I I 125 causesa; 'pull enthe "link 30 and an Eofienir'lg of the valves *9 in the same manner thatthe' piill on the link 30 by the power operated mechanism (Figs. 1 to 1'4) opened the valves.

Theshaft I36 is extended toward'one end'oi I the tank, which is the dumpipgend, and'there v is offset laterally ;to form a 'crank handle 1'41 convenient for operationby the at tendantwho dumps the milk into tank I, then samplesand weighs the milk, and then opens the valvesfto discharge the-milk. After the milk has all :run out from the weigh tank, {the operator merely gracspsthe crank handle M1 and moves it baclgf toward "the tank, which causes a "clockwise rota-f tionof the fshaft M6 in Figs 20 andielease's the meme of 'thefbeaifing T313 -is made outwardly I eonvei gent orr convex as amt (Fig.1l'9), this 1A Bo'llfar i'fiBj-isfixed on the shaft [36, sothat V whenthi's {shaift is ldisposed in the bearings .1 32 and. 1 33 as showninJFi'g. 17, 'theshaft maybe movedendwise to carry the collar I38 against the roller '20, whereupon the weight of the valves then pulls the lever I25 back into the full line positionof'FigJZOf 1 Itisimportant to 'keepthe shaft ll'fiirom endg wise movement "unintentionally after 'the parts aiefasser'rlbldgand for that reason the cam 1'23.

may be provided with a flange "148 which isiinla" plane transverse to the length of the shaftlfitj; and 'this'fiange M8" when theparts are assembled arm-1e end "mm the collar 1m td h ,It will be observed that the hand operated in normal operatin giposition, asshown in Figs 16 and; 17', abuts agarathe endiace of roller 130. Thus, the engagement of this flange I48 with the roller prevents endwisexmovement of the shaft I36 in a. direction and sumcien tly to tirely away from the eambm to carry its roller q I 30 out of the jpath'of movement of theflange "I48 when the shaft I35 and theca-m I43 are moved endwise sufiiciently to disengage the collar I38 from the bearing I33," This permits removal it of the shaft I36, and'easy disassembiy of the entire hand operated mechanism for'cleaning y sterilizingof all of the parts.

and

To reassemblethe device the shaftfliafi is reapplied to the bearings iIS Z and I33 bymovement laterally of itself ,througnthe slots into those bearings, and then by endwisemovement of the 1 ,shaft 136 the collar 13:: is carriedinto telescoping iengagement with the bearing I33, which looks the shaft l3 from removal from the bearing I33.

' The other end or the shaft |36 is;.then locked against removal from bearing I32 by theclip Ml. lever I25 is then swung up into the upright position. shown in Fig. 20 and there reconnected mechanism may be interchangeably mounted on then if at a later date poweroperation of the valves is desired, it "is merely necessary toremove' thehand operated mechanism and substitute therefor the power operating mechanism. The substitution can be easily made evenby relatively unskilled labor.

It will be understood that various changes in,

the details andarrangement of parts; which have beenjherein described and illustrated order to ek plain the nature oftl'ie invention, maybe made I, by those skilled in thefart within the principle I and scope. of theinvention, as expressed in; the appended claims.

I claim as myinventionz 1. ,An improvedweigh tankhaving a run-out ivalve, motor operated mechanism connected to the valve for opening it and fholding it open,

means for causingan opening movementof said valveby said mechanism, and meanscontrolled by the liquid of the tankvvhich is releasedby the opening of said valvefor incapacitating the holding action oisaidmechanism and causing a 0105- ing of said valve after the liquid level in said tank has descended below aselectedlevel.

'2; Animproved weigh tank having a run-out valveginotor operatedmechanism for opening said valve, means for causingan opening move- ,ment of. said valve by said mechanism, means controlled by the liquidinsaid tank for .incapacitating said valve opening means and causing a a closing of said valve after the liquidleveL in said p anew disengagement ofthe collar l3 8fro1"n the bearing I33. When it isdesiredto-disassemble ,the apparatus,- it is-merelynecessary to first dis- 7 connect the linkkfl3ll from the-pins 810i lever I25, whereupon .the'lever I25 maybe swung entank has descendedbelow a selected level, and signal means automatically indicating the closed and open positions of said valve. i

3. An improved weigh tank having a run-out va1ve,an upright tube in said tank having an opening'adjacent its top and an cpening'in its,

side walLand also having a restricted opening in its bottom, an electrode disposed in said tube to extend below said opening in said sidewall, power operated means'for opening said valve, and means controlled by the liquid level in said tube for automatically keeping said power operated means active to hold said valve openuntil the liquid level 4 in said tubehas fallen below the lowerend of said electrode. 1

4. An improved weigh tank having a run-out valve, power operated means for opening said valve," means rendered effective by said power closing ofsaidnormally open switch, when the ,valve means for opening said valve, an upright operated means during an opening movement of said valve for holding the valve open, and means including an electric circuit controlled by the liquid in the weigh tank forautomatically ren-j dering said holding means ineffective and initiat ing a closing movement of said valve after the liquid level inthe tube has fallenbelowa selected level.

5. An improved weigh tank having aIrun-ou t.

valve, an electric rotary motor connected to said valve for opening the same, means including a solenoid for starting and controlling said motor,

means including a push button for energizing said solenoid, a:holding circuit closed by said solenoid for holding it energized, anormallyjopen switch included in said holding circuitjan electromagnet for controlling said last named switch, and means controlled by the liquid, level in said tank for energizing said electromagnet and causing a liquidlevel in said tank is above a selectedlevel.

6, An improved weigh tank having a run-out valve, an electric rotary motor connectedto said valve for opening the same, "means including a solenoid for starting and controlling saidmotoi, means including a push button for energizing said solenoidaholding circuit closed by said solenoid ior holding it energized, a normally open switch includedin said holding circuit, an electromagnet for controlling said last named switch, means'com trolled by the liquidlevel in said tank for energizing said electromagnetand causing a closing of said normallyopenswitch, when the liquid level insaid tank is above a selected level, and signal meansfalso renderedefiective by said solenoid when energized for indicating theactivityof said motor tofopen or hold open said valve." '7.='An improved weigh tankjhaving a run-out tube' in said tank, open adjacentits top and intermediate its ends and also having a restricted opening in its-bottom, an electrode disposed in" said tube to, extend below said opening intermediate said ends, and means controlled by the liquidin said tube in contact with said electrode and rendered effective by said valve opening a means for-automatically keeping saidvalve open until the liquid level in aselected level.

8; An improved weigh ing said motor to said valve for opening the valve when said motor is operated in one direction, a

resilient stop for, limiting the movement of said motor in a valve opening direction, whereby-said motor maybe held onclosed circuit to open the valve andholdit open,-and the resilient stop-Will saidtube has fallen below i tank having a run-out valve, an overload rotary motor, means connecta start. the: motor {in reverse direction immediately upon the-openingof-theficircuit of said motor,

- manually controlled in'eansifor'causing an operation "of said motor and meansautomatically responsiveto the level of liquidconfined insaid V tank under the control of said valve for. incapacitating the torque ofsaid'l'notor on said valve upon a? selected change in thelevel ofsaid liquid controlled ioysaid valve.

, :9. An impro-ved'weigh tankhaving arun-out valve, an overload rotary motonineans connecting said motor to said valve for opening the valve wh-en said motor is operated injone direction, a

resilient stop for limiting the movement of said motor in a valve opening direction, whereby :said motor may beheld enclosed circuit to open the Q valve'and hold it open, and the resilient-stopwil-l start the motor in reverse direction immediately uponjthe opening of the circuit of said motor,

l0.- Animproved weigh tank having a run-out valve, an overload rotary motor, means connecting said motor to said valve for opening th valve when said motor is operated in one direction, a

i resilient stop-ior limiting the movement of said motor in a valve opening direction, whereby said motor may be held on closed circuit to open the valve and hold it, open, and the resilient stop will start-the motor in reverse direction immediately upon the opening of the circuit of said motor, an approximately upright tube in said tank having a restricted opening in itsbotto'mf-and an opening in its side wall above said bottom, an electrode in said tube extending below said opening in said 'si-de' wall of said tube, and means rendered effective by the'presence of liquid in said tube between saidopenings and in contact with said electrode for renderingsaidholding means effectivesuntil the; liquid level in said tube descends below ,a selectedlevel therein.

; 1'11 Anim-proved weigh tank having an opening inv the bottom thereof, 'a valve element mounted insaid opening for vertical movement therein into and out of closed position, asupport extending above said tank and having a downward extending slot, a bell crankha-ving a pivot pin received in said slot, saidbell crankhaving a notch in the-upper edge of one arm thereof,

means detachablyengaged in said slotand depending intosaid tank and detachabl-y hooked to said valve element,.power operated means disposed at one side of said tank, and link meansdetachably connected to said bell crank andto'said power operated means, whereby operation of said poweroperated means will elevate and lower said valve element, and said valve element'bell crank detachable means and link means may be disj-connected from one another and from said power operated meansior easy removal and cleanin :12. improved weigh tank having a pair of run-out -openings in the bottom thereof, with a bevelled valveyseat encircling. a-ch opening, a separated valve element mounted in each-openring for vertical rnovem ent therein and, having gaseat portion engageable with the seat .of that :aszepss opening to close that opening when the valve element is lowered, a support "extending across saidctank, said support having downwardly opening notches, bell cranks having pivots slidingly received in said notches, each bell crank having anotch in the upper edge of one arm thereof, a pair ofrodseachreleasably engaged in a notch of a hellcra-nk, depending into said tank and having, detachably hooked engagement with a valve element immediately belowit, link means connecting'the other arms of said bell cranks, power operated means mounted at the side of the tank and having a crank pin, a link detachably connected to saidcrank pin and to the link means connecting said bell cranks, whereby operation of said power operated means will simultaneously elevate both of said valve ele merits, and said valve elements, rods, bell cranks, I

link means and link may be quickly and easily disassembled for cleansing,

13, An improved weigh tank having a' runout valve, asupport extending across said tank, means mounted on said support for operating said'run-out valve, a rotarymotor mounted at one side of said tank, speed reduction gearing including, a crank operated bysaid motor, linkage connecting,- said crank to said valve operating j-m'eanson said support,- whereby rotation of said "motor will operate said run-out va1ve, a highly resilient stop for limiting rotary movement of said: crank to a position in which the run-out valve is fully open and stopping further operas tion-of-said motor, whereby when current is applied to saidmotor it will open said run-out valve and lioldit open, andwhen current is discon-; tinuedfromsaid motor, said resilient stop will impart a reverse movement to said crank and motor to cause .a closingof said valve.

=14. Animproved weigh, tank having a runoutvalve, a support extending .acrosslsaid tank, means mounted on said support for operating said run-out valve, a frame hinged to one side of said tank so asto swing away from said tank and expose that side of the tank for cleaning,

I power operated means mounted on said frame and operating a crank on said. frame, valve operating mechanismlon said supportand detachably connected to said valve,'.an.d means detach:

' ably connecting said crank and valve operating mechanism. 1 V l5.-An. improved weigh tank having a runout valve inlthe bottom wall thereof, power op:

erated means connected to said valve for operat{ ing the same into open. position, electrical means for-.controlling the activity of said power opl er-ating means, an approximatelyupright tubedepending into said tank adjacent-said valve,

said tube having a restricted opening in its hottomandlan opening in its side above said bottom,,an electrode eXtendingqin-to said tube between said openings, and means-controlled by the passage" of electricity through liquid in said tube and saidelectrode in the portion between saidopenings and cooperating with said electrical means for keeping said power operated means act ve to open said valve after the starter an opening movement thereof by said electrical" means, whereby after an opening of said valve,

the delay in the escape of liquid from the zone of said tube between said openings will mairltain the open positionv of the valve. for aninf time suihcient to allow all of the "re-.

mainderof theliquid to run out from said tweigli tank-aiterwhich the valve will be automatically'closed. I a

ly connected to said operating membef g 9 73 said valve therethroug h whereby said ll 16. Ari-improvedweigh-tank haVingKa'Irun out valve, a frame mounted on one sidef'of saidfi M support and operating means may :be discontank by vertically disposed spaced pivotspins disposed. adjacent opposite ends of' the frame,- each of saidpivot pins being movableto release said frame'to swing about ,thefotherpivot pin and away from said tank side, valvefoperating means connected to said valve for operatingthe same", and power operated means; mounted on said frame and detachably connected fto said valve operatingmeansim operatingsaid runout valve.

1 1']. An improved jweigh tank h vihgasmnout, valve, an electric}rotary,,ioverload motnr,

means connecting said motor @130. :Said valve for opening the same, electromagnetioi means,for; starting and stoppingnthe activity: of saidn otor,

"aqcircuit forjsaid'gstarting means, includingQa 1 manually operated switch to energize said startf ingmeans andstart anoperation ofsaidmotor, a :holding circuit closed, by said starting means nectedlfrom said operating memberfand removed asaumtfromsaidtank. I

above-thettankf mechanism carried by said support and connected to said valve for opening and closing it,"a -leverv outside of said, tank, means connectinggfsaid .lever to 'saidffmechanism to 1 operate the latter, a manually operatedshaft disa posed entirelyon the outsideof ported bythe ttank,1 and having {handle disposed inposition for operation adjacent' one .end i r of the" tank, 1;and*aj cam entirelyputsideof said for locking said starting means inenergized con-1 dition following; theopening of said manually operated switch, a means including a relatively low: voltage, and an electric," circuit completed byliquidinfsaid tank and including arelay con t trolling said holding circuit, whereby said relay will, be energized when the liquid level in said tank is above a',,predetermined level wherebyl when liquid is placed. -insaid tank it willcause U a an energization ofsaidI relay andfl close said holding circuit at said relay, and the run-out of liquid from said, tank ,will :break said holding circuitat said relay toautomatically cause, the deenergization of said motor and a closing of said valve automatically. V y

18. An improved weigh tank having a run-out valve, an electric, rOtary oVerIoad; motor, means connecting said motor to said valve for opening thesame, electromagnetic, means forstarting and stopping the activity iof said motor,a circuit 1 forsaidfstarting means including a manually operated switch to energize said starting means andpstart an' operationfof saidmotor, a holding circuit closed by said starting means for locking said, starting means in energized condition following the opening of saidmanually operated" switch, means including a relatively lowvoltageQ' and an electric circuit completed by liquid in said tank and including a'relay controlling said hold: ing circuit, whereby saidrelay will be energized i when the liquid level in said tank is above a pre i 3 determined level, whereby whenliquidj is placed in said tank it will cause, an; energization of said Crelay and close said holding circuit at said're 1ay;;and the run-out of liquid from said tank will i break'said holding circuit at said relay to automatically cause the deenergizationof said" motor and a closing of said'valve automatically, and

"signal means having a controlling circuit also rendered effective by the energization off} the starting me'ans, ,wherebysaid signal means will tank} operated (by said shaft. and operable on sai'dleverto cause an" opening or closing of said valvefdepending on the ,direction of movement l of saidfhandle, said cam having agdwell and said V lever avi a cooper n -,-portio ,e e s ble in said dwellandbperahle for releasably holding said leverina position 'in whicnthe,valve'is Open. ZllAn t valve ,at the bottom thereof, a support, extending above the tank, mechanism carried by said SupportJand connected to said valve; for opening l and closing it,fla shaft having a handle disposed imposition for operationadjacent one: end of the tank; a pair of spacedbearings for said shaft, -each bearing having a slotjendwisethereof to enable insertion and removal FOf the shaft laterally, means detachablyconnected across the slot of one bearing to releasably prevent removal of thecshaft therefrom, the other bearing having a convergingend; face concentric with the akis of-the bearing passage of that be'aringra collar on said shafti and-having-,a recess on oneface indicate whenthe valve isopenor. being opened.

19. An improved weigh tank having at the lowest part of its chambera run-out'fvalve, a

, FWDP rt extending above the tank l' nism carried by said support and having alink depending into the tank and connected to and operating said valve; a [Operating member extending from said lever mechanism and disposed exteriorly of, said tank, said tank having a plu- I rality of lugs on 'an exterior side wallthereof, a support outsidelof, said tank,' and detachably mounted on said lugs," and operating means carried by said support, and having a member de concentric with said shaft asyit passes therethrough; and facing and rotatably, telescopic withsaid end face, whereby whensaid collar and end face are telescopedgsaid shaftmay rotate butis held against lateral movement out ofsaid other bearing, and; when said shaft is moved end- .wisein'one directiontsaid collar is disengaged,

from said endffaoe and rneans operable by said shaft for operatingsaid mechanism. i 22. An improved weigh tank having a valve opening arranged in the lowest part of the ,bottom thereof' and'having a' seatc'around the periphery of the opening, a valve element seat- I ing upon said-seat to close said opening and operable upwardly within said tank to leave said seat and allow. the contents of gthe tank to r un out, said'valve element having] a plurality of legs depending therefrom throughfsaid opening ,withinlthe area defined by said seat andby the engagementof lsaidlegs with the periphery of; 'saidjo'pening guided for vertical movementiand keptin alignment with said seatlin all positions 1, ormovement toward andfrom said. seat,

*a support extending across said tank, and havingan aperture therethroughalignjed with} said seat and an upstanding tubular, boss around said aperture, a link .detachabIyand hingedly connected' at its lower 'endjto said valve element and passing upwardly through said aperture and boss,. an inverted cupcarriedV-by, the upper end of saidlink and telescopinglooselyover said boss during all vertical movements of said link and valve element as said element is opened and,

closed on said se'at, a lever detachably pivoted on said support and having a forked end straddling' and detachablypivoted'to said cup,

kwsup:

brcv w hflta h v n eminen 

